// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
#pragma once

#include <cmath>
#include <iostream>
#include <sstream>
#include <string>
#include <unordered_map>

#include <pollux/common/base/exceptions.h>
#include <pollux/type/type.h>

namespace kumo::pollux::type {
    class Scanner : public yyFlexLexer {
    public:
        Scanner(
            std::istream &arg_yyin,
            std::ostream &arg_yyout,
            TypePtr &outputType,
            const std::string_view input)
            : yyFlexLexer(&arg_yyin, &arg_yyout),
              outputType_(outputType),
              input_(input) {
        };

        int lex(Parser::semantic_type *yylval);

        void set_type(TypePtr type) {
            outputType_ = std::move(type);
        }

        // Store input to print it as part of the error message.
        std::string_view input() {
            return input_;
        }

    private:
        TypePtr &outputType_;
        const std::string_view input_;
    };
} // namespace kumo::pollux::type
